2003 venture. Had sat for nearly a year. Replaced the starter. (Changed oil too) Battery completely dead, used a jump battery . Started right up! Drove it around the block a few times, no misfires, nothing seemed wrong. Let it run to see if battery would start to charge. Turned it off, battery still dead, used my jump battery, the starter works.. but the engine won't fire. What could go wrong that quickly? Distributor? Fuel pump? One of those crazy wiring issues these vans are famous for? Ive owned it since 2005.. it has 114k miles on it. It ran very well for how long it sat . But not turning over at all? No engine light or any warning . When hooked up to jump battery have all my lights and buzzers.. I did hear a high pitched whine when I first started But wasn't even sure it was coming from it because it stopped.. but the van ran fine.. had I not turned it off lol . Where should I start my trouble shooting???

 

I'm confused, you say it turns over, starts, then later say it's not turning over at all. If it's cranking, but won't start, isolate lack of fuel to ignition. You need to determine if you are getting spark.